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The Chronoswiss Space Timer Gravity CH-9343M.2-MOPA and Lunar Chronograph Aurora CH-7543L-DGR are separate mechanical watches, not variants of one model. The 44 mm Gravity centers on an open-gear hour display and moonphase; the 41 mm Aurora adds chronograph counters and an analog date. Both are listed with 100 m / 10 ATM water resistance, while their published prices come from different regional pages and currencies.
Space Timer Gravity vs. Lunar Chronograph Aurora: key differences
| Specification | Space Timer Gravity CH-9343M.2-MOPA | Lunar Chronograph Aurora CH-7543L-DGR |
|---|---|---|
| Case diameter | 44 mm; stainless steel | 41 mm |
| Movement | Automatic C.308; approximately 42-hour power reserve, according to Chronoswiss’s technical sheet | Automatic C.755 |
| Main displays | Off-center hours at 12 o’clock with open-gear mechanism; central minutes and seconds; moonphase at 6 o’clock | Chronograph center seconds; 30-minute and 12-hour counters; analog date; moonphase at 3 o’clock |
| Water resistance | 100 m / 10 ATM | 100 m / 10 ATM |
| Edition | Limited edition of 50 pieces | Edition quantity not stated on the cited official product page |
| Listed price | €23,400 on Chronoswiss’s official EU page | $11,800 on Chronoswiss’s official US page |
The prices are regional listings in different currencies, not a like-for-like comparison. Check the applicable local Chronoswiss page for current pricing and purchase terms.
What sets the Space Timer Gravity apart?
The Gravity is the larger of the two at 44 mm. Its defining feature is the off-center hour display, where the open-gear mechanism makes the indication part of the dial’s visual architecture. Central minutes and seconds keep time legible, while a moonphase sits at 6 o’clock.
Chronoswiss describes a 63-part dial construction with hand-guilloché work and a laser-rendered lunar surface. The dial is CVD-coated and shifts from green to blue as the light changes. The official EU product page lists the watch as a 50-piece limited edition at €23,400; both the price and availability should be checked on that regional page before purchase: Chronoswiss Space Timer Gravity. The technical sheet gives the C.308 automatic movement an approximately 42-hour power reserve: Gravity technical sheet.
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- 【Stylish Retro Design】Suit for 7.5-inch wrist. Combining a vintage square case with both analog and digital displays, this retro watch offers a multifunctional look that stands out as a fashionable men’s accessory for work or leisure.
- 【Waterproof & Temperature Measurement】Featuring 50-meter water resistance and a built-in temperature display, this waterproof watch allows you to check ambient temperature while staying protected from splashes and rain.
- 【Durable Premium Materials】Made with a zinc alloy case, mineral tempered glass, and stainless steel strap, this wristwatch is built to resist scratches and wear, ensuring long-lasting performance and classic style.
- 【Perfect Size & Comfortable Fit】With a case width of 37mm, height of 36mm, band length of 200mm. Unisex digital watch suitable for wrist sizes up to 7.5 inches.
- 【Gift-Worthy & Functional】Equipped with luminous display, alarm, stopwatch, and three time zones, this analog-digital watch with thermometer is a perfect gift for men who appreciate both style and practical functionality.
What does the Lunar Chronograph Aurora add?
At 41 mm, the Aurora has the smaller case and a more conventional chronograph-focused set of functions. It combines center chronograph seconds with 30-minute and 12-hour counters, an analog date, and a moonphase at 3 o’clock. Its automatic movement is the C.755.
The fully CVD-coated dial shifts from green to blue with changing light, echoing the Gravity’s color treatment while using a different display layout and movement. Chronoswiss’s official US page lists the Aurora at $11,800. That is US-page information, not a universal price or guarantee of stock: Chronoswiss Lunar Chronograph Aurora.
Which watch fits your priorities?
- Choose the Gravity if you prefer the larger 44 mm case and want the open-gear off-center hours to be the focal point, with central timekeeping and a moonphase.
- Choose the Aurora if a 41 mm case and chronograph functions matter more, or you want the added analog date alongside the moonphase.
Both models carry a published 100 m / 10 ATM water-resistance rating. That specification is the same on the official pages, but it does not make the watches identical in size, movement, or complication layout.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Price, reservation and availability
Chronoswiss describes reservation, allocation, and delivery stages for both models. The official pages do not make their purchase terms interchangeable: reservation amounts, deposits, delivery timing, prices, and stock can vary by page and region. Confirm the live terms with Chronoswiss for the market where you intend to buy. The Aurora page also presents the Lunar Chronograph as a cornerstone of the brand, with the collection’s history traced there to 1999.
Quick Recap
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- ⌚【Automatic Watches for Men】Watch Case Diameter 43mm, Case Thickness:15mm,Strap Width:22mm;The dial has a blue starry sky. The self-winding movement does not require batteries. The small earth in the watch will rotate by itself and rotate with the movement of the movement.
- ⌚【Mechanical Watches】Operate without battery, automatic self-winding. However, proper manual winding is indispensable,which can effectively reduce time deviation. (⚠Note: Mechanical watch is different from quartz watch. Insufficient mechanical kinetic energy will cause the watch to stop, please winding it in time.)
- ⌚【30M Waterproof 】30 M Waterproof Watch:Handwash,swimming, no problem ! NOTE: Please Do Not press any buttons in the water or wear this watch for longtime underwater activities such as diving, ect.
- ⌚【Gifts for Men】This watch is well packaged in a stylish and luxurious black watch box,is a great gift choice as a business and party present, you can also generously give this men watch as a gift on Valentine's Day, Christmas, Thanksgiving, parties, Father's Day，anniversaries or other holidays.
- ⌚【100% After-sales Service Guarantee】Purchase without Worry. We offer a 90-day money-back guarantee for any reason.If you have problems during use of the wristwatch, please don't hesitate to contact us. We will offer you professional service
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
